title: Effect of high-intensity intermittent exercise on postprandial plasma triacylglycerol in sedentary young women.
abstract: High-intensity intermittent exercise (HIIE) such as the 30-s Wingate test attenuates postprandial triacylglycerol (TG), however, the ability of shorter versions of HIIE to reduce postprandial TG is undetermined. Thus, the effect of 8-s sprinting bouts of HIIE on blood TG levels of 12 females after consumption of a high-fat meal (HFM) was examined. Twelve young, sedentary women (BMI 25.1 ± 2.3 kg/m²; age 21.3 ± 2.1 years) completed a maximal oxygen uptake test and then on different days underwent either an exercise or a no-exercise postprandial TG condition. Both conditions involved consuming a HFM after a 12-hr fast. The HFM, in milkshake form provided 4170 kJ (993 Kcal) of energy and 98 g fat. Order was counter-balanced. In the exercise condition participants completed 20-min of HIIE cycling consisting of repeated bouts of 8 s sprint cycling (100-115 rpm) and 12 s of active rest (easy pedaling) 14 hr before consuming the HFM. Blood samples were collected hourly after the HFM for 4 hr. Total postprandial TG was 13% lower, p = .004, in the exercise (5.84 ± 1.08 mmol L⁻¹ 4 h⁻¹) compared with the no-exercise condition (6.71 ± 1.63 mmol L⁻¹ 4 h⁻¹). In conclusion, HIIE significantly attenuated postprandial TG in sedentary young women.
authors.affiliation: Faculty of Medicine, University of New South Wales, Sydney, Australia.
authors.forename: Martin
authors.initials: M
authors.lastname: Tan
authors.forename: Rachel
authors.initials: R
authors.lastname: Chan Moy Fat
authors.forename: Yati N
authors.initials: YN
authors.lastname: Boutcher
authors.forename: Stephen H
authors.initials: SH
authors.lastname: Boutcher
mesh_terms: D000328:Adult; D001642:Bicycling / Q000502:physiology; D004041:Dietary Fats / Q000097:blood*; D002149:Energy Intake; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D005215:Fasting; D005260:Female; D006801:Humans; D010101:Oxygen Consumption; D005082:Physical Exertion / Q000502:physiology*; D019518:Postprandial Period; D012146:Rest / Q000502:physiology*; D012420:Running / Q000502:physiology; D057185:Sedentary Behavior; D014280:Triglycerides / Q000097:blood*; D055815:Young Adult
chemical_list: D004041:Dietary Fats; D014280:Triglycerides